Loose-leaf binder



O. LOEWENBACH Nov. 27, 1928.

LoosE LEAF BINDER Filed July 3.4, 1927 Patented Nov. 27, 1928.

UNITED STATES OSCAR LOEWENBACljAI, F MILWAKEE, WISCONSIN.

LOOSE-LEAF BINDER.

y.ippiieation filed July 14,

This invention relates to loose leaf binders.

Objects of this invention are to provide a novel form of loose leaf binder in which a holding plate is provided andretained by extremely simple and easily manipulated means so that the holding plate may be slid over posts carried by the back of the binder and will automatically lock in place and may be as easily released, although it will securely hold against inadvertent detachment- Further objects are to provide a loose leaf binder in which a rigid back is provided with projecting posts adapted to receive the loose leaves, and in which means are provided cooperating with a locking bar to retain the leaves against tearing or disturbances v-:hen the locking bar Vis removed. y

An embodiment of the invention is shown in the accompanying drawings in which:

Figure 1 is a plan view of the binder;

Figure 2 is a sectional view ou the line 2-42 of Figure 1;

Figure 3 is a sectional view on the line 3 3 of Figure 1.

It is to be distinctly understood that the section al views have been greatly exaggerated to more clearly show'the invention.

Referring to the drawings, it will be seen that the loose leaf binder comprises a rigid back 1 which may be suitaliilv covered and which is preferably provided with a reenforciug bai` Q. at edge. This bar 2 carries a pair of upwardly extending rigid posts 3 which are adapted to receive loc-se leaves, such 2:5 as shown at 4. The posts 3 slidablv and loosely receive a pressure bar or auxiliary bar 5 which fits over the posts and may be dropped down upon the loose leaves ll. This bar 5 is relatively thick and heavy and cannot be distorted. Above the bar 5. a locking bar or plate 6 is provided and is of relatively thinner metal, as indicated in the drawings. and is provided with inwardly turned ends T. The plate is apertured. as indicated at 8. for the reception of the post-s 3 and also is provided with a pair of outwardly projecting spring lii'rgers 9. These spring fingers are apertured. as indicated at 1() for slidably receiving the posts. It is to be noted, however, that when the bar 6 is slid into place upon the posts, that it may be slightly bowed, as shown in Figure 2, and that the springs or resilient strips 9 will also be bowed;

Further, it is to be noted that the posts 3 bear against the outer edge of the aperture 8 in the bar 6 and against the inner edge of the 1927. Serial N0`. 205,619.

aperture 1() rin the strips 9. The strips 9 freely yield to permit sliding inwardly or downwardly upon the posts, but resist any upward motion as they thrust the posts into tighter engagement with the outer portion of the apertures 8 in the strips G and thus automatically lock the strip G in place.

In usingr the device, itis merely necessary to position the loose leaves4 upon the posts 3 and slip the bar 5 in place. Thereafter, the operator slides the. bar 6 over the posts and automatic locking, as described above, takes place. It is to be noted that the feet 7 or inturned ends of the bar or strip 6 maintain the outer portions of the bar elevated, and consequently cruise the bar (S to bow downwardly in the. middle. Thus, when the bar 6 is locked in place, it imparts pressure to the auxiliary or pressure bar 5 at spaced points, for instance, in the middle and at each end, as shown in Figure 2. Thus, the-loose leavesare held by a uniform pressure throughout their entire edge portions, as the'bar 5 cannot be distorted,

itis of material thickness and rigidity.

`t is preferable in devices of this type to provide a pocket formed by means of a `lap 11 secured to the rigid back 1 or bottom of the binder. -This-pocket is for the reception of the rigid back 12 of a stack or block of sheets 13, as shown mostclearly in Figure 3. Under these conditions, the posts 3 and the locking or binding mechanism described, may be used to hold a plurality of carbon sheets 4. If desired, a cutout portion 14 may be formed in the baclr, as shown in Figure 1, to facilitate positioning and removal of the block of sheets. The yunused carbon sheets 4 may be temporarily stored or positioned beneath the lowerinost of the sheets 13.

Yt is obvious that the device is capable of numerous other uses, one only having been described and illustrated in order to fully disclose the invention.

It is intended therefore that this mode of describing the invention be interpreted as merely illustrative and in no sense limiting.

` It will be seen therefore that although the invention has been described in considerable detail, such description is intended as illustrative rather than limiting as the invention may be variously embodied and as the scope of such invention is to be determined as claimed.

I claim:

1. A loose leaf binder comprising a back having projecting posts extending therefrom adapted to receive loose leaves, and a locking lim tor tree reception upon said posts, a locking barliaving apertures 'for receiving said posts,

said locking barliaving outwardly extending upwardly projecting spring lingers apertured for the reception ot' said posts, said spring fingers binding against the inner side Vet said posts and forcing said posts against the outer sides-ot the apertures in said last mentioned bar.v f

3. A loose leat'binder comprising a back provided with projecting posts adapted'to receive loose leaves, a pressure bar apertured for tree reception upon said posts, a locking bar having apertures for receiving said posts,

said looking bar having` outwardly extending upwardly projecting spring fingers apertured for the reception ot said posts, said spring fingers binding against the inner side ot' said posts and forcing said posts against the outer sides ot the apertures in said last mentioned bar, said lastmentioned bar being inwardly bowed adjacent its center and bearing at its center and atits ends against the iirst mentioned bar. n

4. A loose leat binder comprising a rigid back, a pair-ojtvposts projecting upwardly therefrom and adapted to receive loose leaves, a pressure bar of rigidl construction freely slidably positioned uponsaid posts'and adapted to bind against said loose leaves, a. locking bar having inwardly turned ends and having a downwardly bowed center, said locking bar being' apertured for thcreception oi said posts, a pair ot upwardly and outwardly extending spring fingers apertured for the reception ot said posts, said spring lingers bearing against the inner sides of said posts and forcing said pests against the outer side of the walls ot the apertures in said locking bar, said locking baA e1 a ging said pressure bar at a plurality of spaced points.

5. A loose leaf binder comprising a rigid back, a pair ot' posts projecting upwardly therefrom and adapted to receive loose leaves, a pressure bar of ri gidv construction freely slidably positioned upon said posts and adapted to bind against said loose leaves, a locking bar having apertures adjacent its ends and having downwardly turned ends adapted to engage the ends of the pressurebar, said locking bar having a downwardly bowed center adapted to engage the central portion oi? tlie pressure bar, a pair ot upwardly and outwardly extending springtingers aperture-d tor the reception ot' the posts, said spring tingers being secured adjacent the end portions oi" the locking bar inwardly ot said posts, said spring lingers bearing against the inner sides ot" the said posts and forcing said posts against the outer side oit the walls of the apertures in said locking bar. Y Y Y ln testimony that I claim the foregoing l have hereunto set my hand at Milwaukee, in the county of Milwaukee and State ot lVisconsin. A

oscila Lonwnusiicrr 

